Astronomy Picture of the Day ·

M3: Inconstant Star Cluster

The Astronomy Picture of the Day for April 15, 2007 is “M3: Inconstant Star Cluster,” an image. The picture is copyrighted by its creator (Credit & Copyright: J. Hartman & ( Harvard CfA ) & K. Stanek ( Ohio State U. )). The original explanation runs about 154 words.

M3: Inconstant Star Cluster
Credit & Copyright: J. Hartman & ( Harvard CfA ) & K. Stanek ( Ohio State U. ) Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Star clusters appear constant because photographs of them are frozen in time. In reality, though, cluster stars swarm the center and frequently fluctuate in brightness.”

— APOD editors, April 15, 2007

Read the full explanation on science.nasa.gov

At a glance

Date
April 15, 2007
Type
Image
Credit
Credit & Copyright: J. Hartman & ( Harvard CfA ) & K. Stanek ( Ohio State U. )
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 154 words

All of April 2007 → · 2007 by month → · Full archive since 1995 →

Topics in this entry

Star clusters

Topics are matched from words in the title and explanation.

On this day: April 15 in other years

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.